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Working medium for heat cycle, composition for heat cycle system, and heat cycle system

A technology of working medium and thermal cycle, applied in the field of thermal cycle system

Active Publication Date: 2018-01-19
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when a composition containing HFO-1123 is actually used as a thermal cycle working medium, there is a technical problem of improving durability by suppressing self-decomposition of the thermal cycle working medium using HFO-1123

Method used

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  • Working medium for heat cycle, composition for heat cycle system, and heat cycle system
  • Working medium for heat cycle, composition for heat cycle system, and heat cycle system
  • Working medium for heat cycle, composition for heat cycle system, and heat cycle system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0211] In Example 1, HFO-1123 and carbon dioxide (CO 2 ), fluoromethane (HFC-41), trifluoroiodomethane (CF 3 I) or propane (C 3 h 8 ) mixed with the ratio shown in Table 3 as the thermal cycle working medium (hereinafter also referred to as "working medium"), the greenhouse effect potential value (GWP), relative cycle performance (relative in R410A) and self-decomposability. The results are shown in Table 3 together with the composition of the working medium. In addition, in Table 3, No.1, No.9, No.10, No.15, No.16, No.21, No.22, and No.27 are comparative examples.

[0212] [table 3]

[0213]

Embodiment 2

[0215] In Example 2, HFO-1123 and carbon dioxide (CO 2 ), the working medium obtained by mixing HFC-32, HFO-1234yf or HFO-1234ze as the second component in the ratio shown in Table 4-6, and the greenhouse effect potential value (GWP) was measured, calculated and judged by the above method , relative cycle performance (relative to R410A) and self-decomposition. The results are shown in Tables 4-6 together with the composition of the working medium.

[0216] [Table 4]

[0217]

[0218] [table 5]

[0219]

[0220] [Table 6]

[0221]

Embodiment 3

[0223] In Example 3, HFO-1123, propane (C 3 h 8 ), the working medium obtained by mixing HFC-32, HFO-1234yf or HFO-1234ze as the second component in the ratio shown in Table 7-9, the greenhouse effect potential value (GWP) was measured, calculated and determined according to the above method , relative cycle performance (relative to R410A) and self-decomposition. The results are shown in Tables 7-9 together with the composition of the working medium.

[0224] [Table 7]

[0225]

[0226] [Table 8]

[0227]

[0228] [Table 9]

[0229]

[0230] It can be seen that the thermal cycle working medium containing HFO-1123 and the first component shown in Table 3 has no self-decomposition property, low greenhouse effect potential, and excellent cycle performance sufficient for practical use. In addition, it can be seen that the working media for thermal cycles containing HFO-1123, the first component and the second component shown in Tables 4 to 9 do not have self-decompos...

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PUM

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Abstract

This working medium for a heat cycle contains trifluoroethylene and a first component comprising at least one substance selected from carbon dioxide, fluoromethane, trifluoroiodomethane, methane, ethane, propane, helium, neon, argon, krypton, xenon, nitrogen, and ammonia.

Description

technical field [0001] The present invention relates to a working medium for a thermal cycle, a composition for a thermal cycle system, and a thermal cycle system using the composition. Background technique [0002] In this specification, for halogenated hydrocarbons, the abbreviation of the compound is written in parentheses after the compound name, and the abbreviation is used instead of the compound name as necessary. [0003] In the past, as refrigerants for refrigerators, refrigerants for air conditioners, working media for power generation systems (waste heat recovery power generation, etc.), working media for latent heat transport devices (heat pipes, etc.), and secondary cooling media, etc. Chlorofluorocarbons (CFCs) such as chlorotrifluoromethane and dichlorodifluoromethane, and hydrochlorofluorocarbons (HCFCs) such as chlorodifluoromethane are used. However, CFCs and HCHCs have been pointed out to have an impact on the stratospheric ozone layer, and are currently ...

Claims

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Application Information

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IPC IPC(8): C09K5/04
CPCC09K5/044C09K5/045C09K5/04F25B9/002H02K7/18C09K2205/126C09K2205/106C09K2205/12C09K2205/24C09K2205/13C09K2205/132C09K2205/40
Inventor 上野胜也大野光田中俊幸冈本秀一速水洋辉福岛正人田坂真维
Owner ASAHI GLASS CO LTD
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